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Isodaphnoretin B, a new bicoumarin from Stellera chamaejasme

Isodaphnoretin B, a new bicoumarin from Stellera chamaejasme

Chinese Journal of Natural Medicines 4(6): 425-427

AINI: To study the chemical constituents of the root of Stellera chamaejasme. METHODS: Silica gel column chromatogramphy was used to isolate the compounds, and spectroscopic techniques (NMR, UV, IR, MS and optical rotations) were used for the structural elucidation. RESULTS: Two bicoumarins: 7-hydroxy-5, 6-dimethoxy-3-[(2-oxo-2H-1-benzopyran-7-yl) oxy]-2H-1-benzopyran-2-one, named isodaphnoretin B (1) and daphnoretin (2) were obtained from the root of Stellera chamaejasme. CONCLUSION: Compound 1 is a new bicoumarin.

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